This patch uses the regmap functions for transceiver register settings
where it's possible. This means everything except the hotpaths like
receive/transmit handling.
Reviewed-by: NStefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: NAlexander Aring <alex.aring@gmail.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>